Analysis of impact load under the compound stratum of shield cutter head
WUWei1 YANG Shaopu1 GUO Jingbo1 ZHUO Puzhou2 WANG Jiangka3 WEI Fuxiang4
1. Department of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043；
2. China Railway Engineering Equipment Group Co., Ltd, Zhengzhou 450000；
3. China Railway First Group Co., Ltd, Xi’an 710054；
4 Qinhuangdao Tianye Tonglian Heavy Industry Ltd, Qinhuangdao, 066000
A new method for calculating the ultimate loads of the cutter head for composite formations was proposed. The safety design of the cutter head in the unfavorable geology was analyzed and improvements were put forward. Since the disc hob and cutter tools are subject to periodic impact loads in the upper-soft and lower-hard strata, the relationship among the maximum alternating load on cutters along the tunnel axis, the penetration of cutters and the height of the hard rock was obtained by analyzing the force on cutters and establishing a mechanical model. The maximum load on the cutter head was transferred to the cutting tool. By calculating the loads on the cutter head, and comparing the difference between the minimum and maximum loads on the cutter head for different strata, the force and overturning moment on the cutter head along the tunnel axis direction were calculated and analyzed. The calculation results show that the method has a good effect on the ultimate loads calculation and safety analysis of the cutter head in the upper-soft and lower-hard strata.
收稿日期: 2018-11-20
出版日期: 2020-01-28
引用本文:
武薇1，杨绍普1，郭京波1，卓普周2，王江卡3，魏福祥4. 盾构刀盘复合地层下冲击载荷分析[J]. 振动与冲击, 2020, 39(3): 289-294.
WUWei1 YANG Shaopu1 GUO Jingbo1 ZHUO Puzhou2 WANG Jiangka3 WEI Fuxiang4. Analysis of impact load under the compound stratum of shield cutter head. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(3): 289-294.
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